Machine for making pretzels.



No. 653,060. Patented July 3, I900.

C. BETZ. V

MACHINE FOR MAKING PBETZELS.

(Application filed Dec. 26, 1899.)

(No l'lodel.) 3 Sheets-Sheet I.

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v 43 Z 42 ufim 9 7 m ,Indewr No. 653,060. Patented July 3, I900.

MACHINE FOR MAKING PBETZELS.

(Application filed Dec. 26, 1889.) (No Model.) v 3 Sheets-Sheet 2.

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No. 653,060. Pafented July 3, I900.

c. BETZ.

MACHINE FOR MAKING PBETZELS. (Application filed Dec. 26, 1899.)

(No ubuel.)

a Sheets-Sheet a.

IIMIIII v li m Tu: norms PETEJS co. Fnorouwa. WASHINGTON, I219 NITEDSTATES CHARLES BETZ, or sr. LOUIS, MISSOURI.

MACHINE FORQMAKING PRETZELS.

SPECIFICATION forming part of Letters Patent No. 653,060, dated July 3,1900.

Application filed December 26, 1899. Serial No. 741,524. (No model.)

To aZZ whom, it may concern:

Be itknown that I, QHARLES Bnrz, a citizen of the United States,residing at the city of St. Louis, in the State of Missouri, haveinvented certain new and useful Improvements in Ma'- chines for MakingPretzels, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention relates to a machine for cutting and rolling pretzelspreparatory to their.

being twisted into the desired forms and baked.

My invention consists in features of novelty hereinafter fullydescribed, and pointed out in the claims.

, Figure I is a top or plan View of the machine. Fig. II is a View inside elevation. Fig. III is an enlarged vertical sectional view taken onthe line III III, Fig. IV. Fig. IV is an enlarged view, in frontelevation, of the upper part of the machine. Fig. V is an enlargedsectional view of fragments of the dough-rolling drum and the lowermostpart of the curved pressure-plate. Fig. V1 is a view in side elevationof the dough-carrieractuating device. 'Fig'VII isan enlargedcross-sectional view taken onthe line VII VII,

Fig. VI. FigJVIII is a detail sectional view taken on the line VIIIVIII,Fig. IV. Figs. IX andX are cross-sectional views of modified formsof the rim of the dough-rolling drum.

1 designates the base of the machine, and 2 the journalboxes mountedthereon, in which the main driving-shaft 3 is journaled. The shaft 3 isequipped with a driving-pulley 4, that receives a belt 5 (see Fig. I)and carries a spur-wheel 6.

7 designates standards mounted on the the rim of the dough-rolling drum10 and supported upon adjusting-screws 13, 14, and 15, seated indifferent parts of the standards 7 The screws 13 are set in the base ofthe standards 7. The screws 1 f are set in a cross-bar 7 connecting thestandardsnear the bottoms thereof, and the screws 15 are set in acrossbar 7 near the upper ends of the standards. (See Fig. II.) Byadjusting the screws 13, 14, and 15 the curved pressure-plate may bemoved to or from the rim of the dough-rolling drum 10, as desired, inorder to create greater or less space between the dough-rolling drum andcurved pressure-plate and also that where desirable such space may becreated of greater dimensions at either the upper orlower part of thecurved pressure-plate. Mounted on the standards'Z are a pair of uprights16, that occupy a position immediately above the dough-rolling drum 10.Se cured to the uprights 16 is a guard-box 17, that is open at top andbottom. 1

18 designates a roller, of pliable material, such as soft rubber, theroller beingcarried by a shaft 19, mounted in' the uprights 16.

20 designates an endless carrier that travels on the pliable roller 18over a supportingplate 21, fixed to the uprights 16 and aiso arranged ona roller 22.

23 designates a pair of angle frame-bars mounted on the base 1 andattached to exten-. sions of the standards 7. (See Figs. I and II.)Mounted on the frame-bars are journal-box frames 24, containing movableboxes 25, that receive the shaft of the roller 22, the boxes beingadjustable by means of adjusting-screws 26, by which they may be movedto move the roller 22 to tighten the'endless carrier 20.

In the use of the machine the dough, prepared in strips, is placed onthe endless car- 'rier 20 and is conveyed thereon to the locat-ion ofthe roller 18, passing under a smooth-.

ing-plate 27. (See Fig. III.) The driving mechanism of the carrier willbe hereinafter described. 7

28 designates a sprocket-wheelon the driveshaft 3, that receives adrive-chain 29, leading to a sprocket-wheel 30 on a shaft 31, mounted inarms 16 projecting'from the uprights 16.

Fixed to the shaft 31 at the opposite end from the sprocket-wheel 30 isa disk 32. (Shown in detail in Figs. VI and VII.) In the disk 2 csaoco.

32 is an undercut groove 33, that --receives a block 34. Seated in theblock 34 is a jam screw or pin 35, adapted to bear against the diskwithin the groom 33 to hold the block in a fixed position.

36 is a pitman-rod through one end of which the shank of the jam-screw35 passes loosely. The opposite end of the pitm an-rod is pivoted to arocker 37, loosely hung on the shaft 22 of the roller 22'. The rocker 37carries a pawl 38, backed by a spring 39.

40 is a ratchet-Wheel fixed to the shaft 22 and with the teeth of whichthe pawl 38 is adapted to engage. shaft 31, propelled by the drive-chain29, the disk 32 is rotated and the pitman 36 is opereratedto rock therocker 37. As the rocker is moved the pawl 38 engages the teeth of theratchet-wheel 40 and moves said wheel to im' part rotation to the roller22,and consequently to the endless carrier 20 thereon. By thisarrangement and operation of parts the endless carrier is movedintermittently to carry the dough placed thereon forward to thecuttingknife, which will be presently described. By moving the block 34in the grooved disk 32 away from or toward the axis of the disk thelength of stroke of the pitman 36 may be altered at will to cause agreater'or less movement ofthe ratchet-wheel 40 oneach forward stroke ofthe pitman and a consequently inprovided with eccentrics 44, each ofwhich is loosely surrounded by a sectional collar 46. 4

(See Figs; III, IV, and'VIII.)' One member of each sectional collar 46carries a stem 47, and each of the stems receives the connection of acoupling 48. Connected to the couplings 48 are links 49, provided withloops 50, (see FigzVIIL) that receive the ends of a bar 51, that carriesa knife 52. The ends of the bar 51 are held from turning in the loops 50by set-screws 53, set in the loops and adapted to bear against the endsof the bar. The bar 51 worksin Vertical guide-slots16 contained by theuprights 16. In the turning of the shaft 31 the pinion 42 is rotated'andmeshing with the teeth of the pinion 43 imparts rotation totheeccentric-carryingshaft 44. As the shaft 44 turns the eccentrics 44are carried thereby, and through the connecting-links 49 the knife 52 israised and lowered to and from the carrier 20 in a'position above thepliable roller 18, asclearly seen in Fig. III. The stems 47, carried bythe sectional collars 46, are offset from each other with respect to theaxes of theeccentrics, so that first one end and then the other of theknife 52 is raised and lowered" to the carrier 20 to cause the knife tooperate in" a shearing manner in cutting the dough passed thereunder bythe carrier on each of its intermittent movements, as explained. As

On the rotation of the ed in the uprights 16.

the knife descends each time it cuts off a piece of dough fed forward onthe endless carrier, and the dough falls through the open guard 17 ontothe rim of the dough-rolling drum 10 and is. conveyed by thedough-rolling drum in the direction indicated by the arrow in Fig. IIIinto the space between the dough-rollingdrum rim and the curvedpressure-plate 12, whereby the pieces of dough are rolled to the desiredshape and emerge at the lower end of the curved pressure-plate, wherethey are discharged onto the table 54.

55 designates a pinion on a shaft 56, mount- The pinion 55 meshes withthe teeth of the pinion 41, whereby the shaft 56 is rotated. Carried bythe shaft 56 is a wiper-blade 57, said wiper-blade being adapted tocontact with the knife 52 in the turning of its shaft 56 for the-purposeof clearin'g therefrom any dough that mayadhereto the knife, the doughbeing thrown from the wiper-blade and falling onto thedough-rolling drum10.

In order to remove any dough that may'ad 59 arranged in position to bestruck by the wiper-blade 57 in its rotation, the wiper-plate beingmovably held by a spring 60, secured to the supporting-shaft 61, onwhich the wiperplate is mounted.

In Figs. IX and X, I have shown two modi fications of the rim of thedough-rolling drum 10,- the rims 10 and 10 therein being provided withcircumferential concavities 10 and 10 instead ofhaving a flatcircumference, as seen in Figs. III and V.

I claim as my invention 1. In a machine of the character described, thecombination of dough-cutting means, a carrier on which the dough isconveyed to said cutting means, a pliable rollerlocatedbeneath saidcutting means, and over whichsaidcarrier travels, a dough-rolling drum,andan ad'- j ustable plate located at the periphery of saidrolling-drum, substantially as described;

2. In a machine of the character described,

the combination of a dough-rollingmeans, an

endless dough-carrier, means for operating said endless dough carrierintermittently; a dough-cutting knife, an eccentric-carrying doughcutting knife, an eccentric marryingv shaft, the eccentrics thereon,sectional collars encircling said eccentrics, and offset connectionsbetween said sectional collars and dough-cutting knife, substantially asdescribed. V

4. In a machine of the character described, the combination of adough-rolling means, a

doughcarrier, a cutting knife, means for operating said parts, and arevolving Wiperblade arranged to turn into contact with said knife,substantially as described.

5, In a machine of the character described, the combination of adough-rolling means, a dough carrier, a cuttingknife, means foroperating said parts, a revolving wiper-blade arranged to turn intocontact with said knife, and a spring-controlled wiper-plate arranged inthe path of rotation of said wiper-blade, substantially as described.

6. In a machine of the character described, the combination of adough-rolling means, a cutting-knife, means for operating said parts, anendless dough-carrier, rollers on which said carrier is arranged; andmeans for operating said carrier, comprising a driven disk provided withan undercut groove, a block located in said groove, a pin or screwseated in said block, a pitman connected to said pin, a

ratchet-wheel fixed to the shaft of one of said CHAS. BETZ.

In presence of- E. S. KNIGHT, M. P. SMITH.

